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Old 06-01-2012, 09:38 AM   #1
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2nd spongy outlet covers


Taking outlet covers off to paint my new home.

I found white foamy soft receptacle covers behind the plastic receptacle covers and read that they help to keep hot or cold air from leaking outside thru the standard covers.

Do many people use these spongy covers behind their outlet covers? I'd never seen them before. I first didn't know what they were and started throwing them away. Now I may buy more and make use all outlets have them.

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Last edited by Startingover; 06-01-2012 at 09:40 AM. Reason: added sentence
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Old 06-01-2012, 09:58 AM   #2
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2nd spongy outlet covers


They are not required (at least in my area). They ate used to stop airflow around the box.

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Old 06-01-2012, 10:06 AM   #3
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2nd spongy outlet covers


I saw a video online where someone pointed a thermal camera at an outlet before and after installing an outlet gasket. The gasket appeared to make a noticeable difference in the surface temperature of the outlet. So in some cases they can definitely help.
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Old 06-01-2012, 10:10 AM   #4
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2nd spongy outlet covers


thanks.

I can't wait to see my first Electric bill. I expect with moving in, doors open to carry boxes in, etc. that it will be high so every little savings helps.
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Old 06-01-2012, 10:53 AM   #5
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You will save more energy just turning off the AC until all the boxes are in and you can close the door and keep it closed.
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Old 06-01-2012, 12:04 PM   #6
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2nd spongy outlet covers


I'd put them in any outlets that are on exterior walls. Interior walls, not so much.
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Old 06-01-2012, 12:05 PM   #7
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2nd spongy outlet covers


Yup. Just sweat it out if you can. Incidentally, the old saw that it takes more energy to heat/cool an area if it's been allowed to reach the outside temperature than if you kept it at room temperature the entire time isn't true.
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Old 06-01-2012, 12:35 PM   #8
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2nd spongy outlet covers


Unless you had the a/c cranked down to the lowest temp, to compensate for people coming in and out, your electric bill should not be that high. As for the covers, they are used to insulate the outlet, but in reality, you also have to use DAP foam in a can to insulate any openings around the box, to air seal. The insulating foam is only a part of the equation.
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Old 06-01-2012, 12:41 PM   #9
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2nd spongy outlet covers


Those outlet/switch covers are very important to keeping the moisture from your sheathing and growing mold. That 1/8" slot around the outlet = -12/8 or 1-1/2" sq. hole, about 100 times more moisture than diffusion through the drywall--- Fig.4: http://www.buildingscience.com/docum...researchreport

Usually the wiring runs horizontally to other fixtures/outlets/switches interconnecting your wall cavities for moisture laden air or air from the basement/crawl -- even on interior walls (stack effect)- to do havoc; Fig. 7; http://www.buildingscience.com/docum...control_ed.pdf

As you can only plug the attic/crawl/basement holes from wiring/plumbing, use the foam seals wherever you can- never try to make your own as the store bought ones are self-extinguishing if ever a fire nearby. They also stop feeding air to rob you of R-value and convective loops in the wall cavities.

Gary
P.S. Good point Greg, on seal inside also. I pulled that as you were quicker on the draw....Lol.

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